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        <h2 id="一、显示函数"><a href="#一、显示函数" class="headerlink" title="一、显示函数"></a>一、显示函数</h2><ol>
<li>$display(“带格式字符串”,参数1,参数2,…);</li>
</ol>
<ul>
<li>在文本后会加一个<strong>换行</strong></li>
</ul>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br></pre></td><td class="code"><pre><span class="line">module sdispl;</span><br><span class="line">	interger i;		//i为整型</span><br><span class="line">	reg [3:0] x;	//x为4位</span><br><span class="line">	initial begin	//initial块，只执行一次</span><br><span class="line">	i=21;			</span><br><span class="line">	x=4&#x27;he;</span><br><span class="line">	$display(&quot;1\t%d\n2\t%h\\&quot;,i, x);//输出显示</span><br><span class="line">	end </span><br><span class="line">endmodule	</span><br></pre></td></tr></table></figure>
<p><img src="https://img-blog.csdnimg.cn/20200624103639699.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMwNDQ3MzE1,size_16,color_FFFFFF,t_70" alt="在这里插入图片描述"></p>
<ol start="2">
<li>$write(“带格式字符串”,参数1,参数2,…);</li>
</ol>
<ul>
<li>在文本后<strong>不会</strong>加换行</li>
</ul>
<ol start="3">
<li>$strobe和$monltor</li>
</ol>
<ul>
<li>$strobe  (“带格式字符串”,参数1,参数2,…);</li>
<li>$monitor(“带格式字符串”,参数1,参数2,…);</li>
</ul>
<h2 id="二、停止函数"><a href="#二、停止函数" class="headerlink" title="二、停止函数"></a>二、停止函数</h2><ol>
<li>$finish表示停止仿真</li>
<li>$stop表示暂停仿真</li>
</ol>
<h2 id="三、系统时间函数"><a href="#三、系统时间函数" class="headerlink" title="三、系统时间函数"></a>三、系统时间函数</h2><ol>
<li>$time返回一个64位整数时间值</li>
<li>$stime返回一个32位整数时间值</li>
<li>$realtime返回一个实数时间值</li>
<li>$timeformat控制时间的显示方式</li>
</ol>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line">示例代码</span><br><span class="line">$monitor(&quot;%d d=%b,e=%b&quot;,$stime,d,e);</span><br></pre></td></tr></table></figure>

<h2 id="四、文件操作"><a href="#四、文件操作" class="headerlink" title="四、文件操作"></a>四、文件操作</h2><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line">文件句柄=$fopen(&quot;文件名&quot;)					//打开文件</span><br><span class="line">$fstrobe(文件句柄,&quot;带格式字符串&quot;,参数列表)   //strobe到文件，$fdisplay语句格式与它相同</span><br><span class="line">$monitor可以多个进程同时进行</span><br><span class="line">$fclose(文件);						   //关闭文件</span><br><span class="line">$feof(文件);							   //检查是否到文件末尾</span><br></pre></td></tr></table></figure>



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